Magnetic Star-Cross Filter with 8 Points. The magnetically attached SmallRig 52 mm Magnetic Filter Adapter Ring ensures a secure and stable application. Equipped with waterproof, dirt-repellent, mold-resistant, and scratch-resistant AR coatings, the filter features an ultra-thin metal frame that prevents vignetting. The SmallRig MagEase Magnetic Star-Cross Filter (8 Points) 52 mm 4218 adds an artistic touch of radiant star shapes to your photos. With its engraved cross lines, this filter creates brilliant star shapes from every light point. The direction of the stars can be easily changed by rotating the filter. Made from German Schott B270i HD glass, the filter exhibits low color deviation and features a CNC-milled ultra-thin frame. Even when using ultra-wide-angle lenses, there is no vignetting. It can be securely attached to SmallRig magnetic adapter rings. Note: Not recommended for use in strong motion or high winds. Keep away from acid exposure.